Date: Wed, 25 Feb 2009 12:51:01 -0500 From: John Baldwin <jhb@freebsd.org> To: Nathan Whitehorn <nwhitehorn@freebsd.org> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r188018 - in head: sys/dev/pci usr.sbin/pciconf Message-ID: <200902251251.01789.jhb@freebsd.org> In-Reply-To: <49A57F7B.3040704@freebsd.org> References: <200902021954.n12JsGT2005768@svn.freebsd.org> <49A57F7B.3040704@freebsd.org>
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On Wednesday 25 February 2009 12:27:23 pm Nathan Whitehorn wrote: > John Baldwin wrote: > > Author: jhb > > Date: Mon Feb 2 19:54:16 2009 > > New Revision: 188018 > > URL: http://svn.freebsd.org/changeset/base/188018 > > > > Log: > > - Add a new ioctl to /dev/pci to fetch details on an individual BAR of a > > device. The details include the current value of the BAR (including all > > the flag bits and the current base address), its length, and whether or not > > it is enabled. Since this operation is not invasive, non-root users are > > allowed to use it (unlike manual config register access which requires > > root). The intention is that userland apps (such as Xorg) will use this > > interface rather than dangerously frobbing the BARs from userland to > > obtain this information. > > - Add a new sub-mode to the 'list' mode of pciconf. The -b flag when used > > with -l will now list all the active BARs for each device. > > > > Do you happen to have any patches for libpciaccess to use this? > > Libpciaccess (and so the latest Xorg server) hoses my PowerPC machine > when trying to list BARs, but pciconf -b works correctly. There are > probably endianness problems in the libpciaccess code, and it would be > nice to just replace that mess with this interface. No, I don't have any patches. rnoland@ might. This interface was explicitly designed to replace mess in libpciaccess. :) -- John Baldwin
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